TIFA is an adapter protein containing a forkhead-associated (FHA) domain that functions as a critical component of bacterial pathogen sensing. TIFA serves as a key adapter in the ALPK1/TIFA/TRAF6 signaling axis, which is activated when the bacterial metabolite ADP-heptose is recognized by the kinase ALPK1 1. ALPK1 phosphorylates TIFA at Thr-9, triggering TIFA oligomerization and subsequent polyubiquitination of TRAF6, leading to activation of NF-κB and AP-1 transcription factors through proteasome-independent mechanisms 2. This pathway promotes production of pro-inflammatory cytokines including IL-8 and initiates innate immune responses to combat Gram-negative and some Gram-positive bacteria 3. Clinically, dysregulation of TIFA signaling is implicated in multiple pathologies. TIFA expression is upregulated in acute kidney injury (AKI), where METTL3-mediated m6A modification enhances its mRNA stability, promoting NLRP3-dependent pyroptosis 4. In colorectal cancer, bacterial ALPK1/TIFA signaling increases anti-apoptotic genes and reduces chemotherapy sensitivity 3. Mutations in ALPK1 that aberrantly activate TIFA are associated with the autoinflammatory syndrome ROSAH 1. IFN-γ licenses ALPK1/TIFA pathway responsiveness in monocytes through JAK signaling, suggesting therapeutic potential for JAK inhibitors in ALPK1-related inflammatory conditions 1.